George f



G. F. LONG.

MUFFLER CUT-OUT.

APPLICATION FILED JULY 21 1916.

1,320,627. Patented Nov. 4, 1919.

Tiql.

WITNESSES l/VI/EA/ 70/? My I Ggyoag'eFL on g A TTORA/EVS GEORGE F. LONG, OF NEW YORK, N. Y.

MUFFLER CUT-OUT.

Specification of Letters Patent. vPatented N 4 1919.

Application filed July 21, 1916. Serial No. 110,496.

To all whom it may concern:

Be it known that I, GEORGE F. Lone, a citizen of the United States, and resident of New York city, in the county of Queens and State of New York, have invented certain haust pipe from the engine extends downwardly, is then bent horizontally at an angle toextend rearwardly ofthe car and terminates in a horizontal sectionof pipeleading to the mufller. The space taken up by this horizontal section of pipe is admirably adapted to contain a muflier cut-outr but in most makes of automobile this space is only about five or six inches in length. The usual size cut-outs necessary for an automobile engine cannot be fitted within this limited space and if reduced in size would not'provide the necessary size of expansion chamber nor the necessary clearance for the gases.

Accordingly, another object ofxmy invention'is to provide a mufiier cutout which will provide a clear, free escape for the gases from the engine and which, at the same time, maybe proportioned and designed so asto be installed in a limited length of thee):- haust pipe.- s i I 1 Incidental to the object of economical construction, further desiderata are to provide a device of the class described which can be stamped toshape from sheet metal of thin gage material but assembled so as to reinforce interfitting parts,'in which any necessary machining is either entirely avoid-ed or reduced to a minimum and in which the parts may be assembled with the least possible amount of skilled labor. 7 1

Various other objects and advantages of the invention will be in part obvious from an inspection of the accompanying drawings and in part will be'more fully set forth in the following particular description of one form of mechanism embodying my inventionand the invention also consists in certain new and novel features of'construction and combination of parts hereinafter set forth and claimed.

In the drawings: I Figure :1 is a view'in side elevation Show: ing a preferred embodiment of my inven tlon, and with parts broken away to show internal construction; I Figs. 2 and 3 are c horizontal sectional views taken on the line 2*2 of Fig. 2 and showing the valve shell in its two operative positions. 7 i 1 v Theusualhorizontal section of an exhaust pipe 3 is cut away between the bend 4 anda muffler '5 to accommodate the cut-out 6. The body portion-of the cut-out is formed of two cylindrical: shells 7, 8, telescopically inte'r fitting .to have a gas=tight rotary fit. These shells are stamped from sheet metal of rela tively thin gage and one end of each shell is provided with ahead 29 integral therewith and oppositely arranged so as to form a vertically disposed barrel containing an expansion chamber 10 with closed upper and lower ends. 1

The outer shell 7 constitutes a bearing for the inner valve shell and the wall of the outer shell is provided. with a'pair of dia metrically disposed openings, one of which, 11, is designed toiface theexhaust pipe 8 and the other ofwhich,f12, is designed to face the muffler. These openings are relatively large and preferably are rectangular with their longest dimensions vertical so as to utilize practically the entire length of the barrel. These openings have a cross-sectional area at leastequalto that of the exhaust pipe and preferably should have a larger area than the exhaust pipe thereby to insure a sufiicient clearance for the gases.

' i A pair of fittings 13 consitute extensions from-opposite sides ofthebody portions and coact therewith normally to form a continuation of the exhaust pipe line to the muffler. 'T-he fittings are attached to the ex- 'ha'ust pipe and "to the muffler inlet pipeli by set screws 15 as is usual with devices of this character, or, if desired the interengagmg parts may be screw-threaded as shown at 16 inFigs. 2 and 3. The portion of the fittings adj acent the body'portion are reduced transversely of the length of the shells as shown i i1 -Fig$r 2 and 3 and'are elongated lengthwise of the same as shown in Fig.- lto form frusto-pyramidal end walls 17, forming rectangular throats 18 outlining the openings -11 and 12. The ends of the walls'17 are flared outwardly to form attaching flanges 19 fitting the side of the outer shell about the openings. The flanges are secured to the outer'shell preferably by rivets 20'the inner ends of which are countersunk so as not to interfere with the fit of the telescoped shells. The outer shell is also provided with an outlet-port 21 similar in design t'o' and positioned between the openings 11 and12.

The inner valve shell 8 is provided with a pair of circumferentially spaced openings'22 and 28 designed to form Continuation respectivelyof the openings 11 and 12 when the' shells are in their normal position with the exhaust pipe open direct'to'the mufiler as shown in Fig. 2. The opening 221corresponds in dimensions wit-lithe opening 12- to the muffler but the opening 23 is of'such a length that it may be disposedacross-both i The shells are demountablyj-fastenedto getherby a pivot shaft 24Lwhich is passed and has itsopposite end squared and fastened to the other head. Theshaft is provided; with an actuating leverjarm 25 by" means'of which'th'e valve shell may be rot'ated, The end of the; shaft opposite the end to which the lever arm is fixed projects I end of a spring 27 coiled 'about'the project 1ng portion of the shaft. The end; of the spring adjacent. the head is fastened to a bojsagew'ayto the muffler.

In operation, the gases normally pass from the exhaust pipe through the expan I sionichamber a'ndi'nto the muffler as is usual with devices of this character. 'A transverse pull on the connection attached 'tothe lever armcauses the valve shellto rotate in the direction indicated by the arrow in Fig. '2 into the position shown in Fig. 3, thus clos- "ing communication with the muffler and shell and restore the parts to their normal pos1tion.- a

constructed.

I the opening 11 and across the port 21 when 25 through thecenter of oneof the heads 9 '35 beyond the adjacent shell head and is prov I N V linterfitting size and as all' other'parts may vi'ded withlock nuts 26 designed to hold one opening the expansion chamber direct to the ,outer' air. Releasing the pull on the'lever arm perm ts the springto re rotate'the valve vtake up less room than the heavy metal ca'sting 3,'s'of which such devices are usually Further, the device can be made of a capacity sufficient for use in automobile engines and at the same time may have a diameter to fit within thelimited 5 I or 6 inch space provided in the exhaust pipe length of some automobile constructions. A device designed asdescribedwill give sufficient'clearance horizontally for the gases as they'pass through the device, especially with the large size'ofopenings provided,

and as the device may be made of any convenient length vertically any desired size of expansion chamber. may be provided .at relatively small'additional cost over small size devices now on the; market. Asthe shells are cylindrical and interfitting, they mutually reinforce eachother, thus 'permittingthe use of'a minimum amount of ma In some forms" of muffler cuts it has been usual to provide "a holding spring for. the movable valve element of sufficient strength to prevent flapping of themovable parts when subjected to the variable I pressures fromfthe exhaust pipe-.- While-a string may be used inrthedeviceillustrated' for-the purpose of restoring the parts'to' their normal position this spring has atensionrmerely sufficient toovercome the frictional resistance'between the shells and need not be the heavy expensive springs usually found in devices of this character. Allflutteringibf valve elements, with the resulting wear and annoyance caused by 'thenoise of loosening. of parts is eliminatedfin the device disclosed. As the shells can be'drawn to'an accurately bestampedto shape andassembled practi cally-without any imachining; thecostof 7 construction is reduced to 7 a minimum; The

V 7 (parts may be readily separated. simply-by 1 1 0 stud 28; projecting-from the head'slightly' off-centered therefrom. The springs act on the shaft to rotatethe valveshellinto nor mal-set position providing a free open pas- 1 loosening'the bindingnuts at one'end' of the shaft "and thetelescoped. parts withdrawn from each other;

While'iI have shown and have pointed out in the annexed 'claim; cer

' A muflleneut out comprising twooylindri cal 7 sheet metal shells telescopically. inter- 1 fitting to have a gas tightrotaryffit,:heads. defining opposite endsiof said 'shel'lstoform 7 an upstanding closed expansion. chamber, 7

Op osite sides of the outer. shell 1 provided with elongated openings extending lengthwise of the shells thereby to obtain the maximum possible area of opening, fittings opening into said elongated openings and adapted to connect the out-out to the muflier and exhaust pipe, the inner shell provided With openings adapted to register with the open- Gofies of this patent may be obtained for five cents each, by addressing the ings in the outer shell and a control projecting from the top of the inner shell for actuating the same.

Signed at New York city, State of New York, this fifteenth day of June, A. D. 1916.

V GEORGE F. LONG.

Commissioner of Patents,

Washington, D. G. 

